Advantage I-200 User's Guide download pdf (Page 41)

40 A-61520 April 2005

Deskew  check this option to automatically deskew a document

within ±0.3 degrees of the leading edge of the document. Automatic

deskew can detect up to a 45-degree skew and correct up to a 24-

degree angle at 200 dpi or a 10-degree skew angle at 300 dpi. This

option is not available when you have Fixed to Transport or Relative to

Document cropping selected.

NOTE: To prevent data loss, the document must have all four corners

within the image path.

Halftone Removal  used to enhance images containing dot matrix

text and/or images with shaded or colored backgrounds using halftone

screens. This filter effectively eliminates noise caused by the halftone

screen. This option is only applied to binary images.

Polarity  the host PC provides information to the scanner defining

whether the image should be stored in standard or reverse polarity. The

default polarity is Black on a White background. Reverse polarity is

White on a Black background.

Noise filter — Occasionally small dots or specks appear in the

background of a scanned image. These specks increase file

compression size and usually contain no image information. Using the

Noise Filter on documents containing very fine detail (e.g., the dot on

an "i" in 4-point type) may cause information to be lost. It is

recommended that you do not use the Noise Filter when scanning

documents with text smaller than 7-point type.

Noise Filter can be used with binary images only and is Front/Rear

independent. Choose None, Lone Pixel or Majority Rule.

• Lone Pixel reduces random noise on binary images by converting a

single black pixel surrounded by white to white or by converting a

single white pixel surrounded by black to black.

Black on White polarity White on Black polarity

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Advantage I-200 User's Guide Page 41